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Abstract | Cited by

By utilising ionic liquids the pharmaceutically active triterpene betulin can be extracted from biomass with significantly improved extraction yield and purity. The recovery of the ionic liquid 1-ethyl-3-methylimidazolium acetate via azeotropic distillation of EtOH/H2O was successfully demonstrated.

Graphical abstract: New aspects for biomass processing with ionic liquids: towards the isolation of pharmaceutically active betulin

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